#!/usr/bin/python

import sys
#import re
from Bio import SeqIO
from Bio.Alphabet import IUPAC

#m = re.compile('(\S+) (.*)')

seqfile = sys.argv[1]
seqs = SeqIO.parse(seqfile, "fasta")

for s in seqs:
    rna_seq = s.seq
    dna_seq = rna_seq.back_transcribe()
    print ">" + s.description
    print dna_seq